From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
Cc: Chris Wright <chrisw@sous-sol.org>,
Virtualization Mailing List <virtualization@lists.osdl.org>
Subject: Re: how set_pte_at()'s vaddr and ptep args relate
Date: Wed, 08 Nov 2006 11:59:24 -0800 [thread overview]
Message-ID: <4552371C.8050901@goop.org> (raw)
In-Reply-To: <C1774713.3FA7%Keir.Fraser@cl.cam.ac.uk>
Keir Fraser wrote:
> Changing from read-only to writable is more exciting. You get a spurious
> page fault when the CPU finds the read-only TLB entry on your first write
> access. The CPU does throw away the TLB entry at that point though, so the
> fault handler can do nothing and yet still make progress. That's guaranteed.
>
Do you mean the tlb entry gets invalidated as part of raising the
fault? Do you know where this is documented?
Thanks,
J
next prev parent reply other threads:[~2006-11-08 19:59 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-07 19:57 how set_pte_at()'s vaddr and ptep args relate Jeremy Fitzhardinge
2006-11-07 22:19 ` Zachary Amsden
2006-11-07 22:38 ` Jeremy Fitzhardinge
2006-11-07 23:33 ` Zachary Amsden
2006-11-07 23:42 ` Jeremy Fitzhardinge
2006-11-07 23:59 ` Zachary Amsden
2006-11-08 0:15 ` Jeremy Fitzhardinge
2006-11-08 0:19 ` Zachary Amsden
2006-11-08 8:34 ` Keir Fraser
2006-11-08 19:59 ` Jeremy Fitzhardinge [this message]
2006-11-08 20:18 ` Jeremy Fitzhardinge
2006-11-08 23:17 ` Keir Fraser
2006-11-08 23:25 ` Jeremy Fitzhardinge
2006-11-09 8:29 ` Keir Fraser
2006-11-09 9:15 ` Zachary Amsden
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